.screen_bg{
   
    width: 1920px;
    overflow: hidden;
    // background: url('@/assets/bg.png') no-repeat left top fixed;
    background-size: 1920px 1080px;
    font-size: 15px;
    position: relative;
    &::after{
        content: '';
        display: block;
        background: url('@/assets/bg_m.png') no-repeat left top ;
        background-size: 1920px 1080px;
        position: absolute;
        width: 1920px;
        height: 1080px;
        top: 0;
        left: 0;
        z-index: -1;
    }
}
.header_bg{
    height: 96px;
    // background:url('@/assets/header.png') no-repeat center center;
    background-size: 100% 100%;
    color: #fff;
    justify-content: center;
    align-items: center;
    padding: 0 20px;
    text-align: center;
    .logo{
        width: 400px;
        text-align: center;
        font-size: 40px;
        cursor: pointer;
        letter-spacing: 2px;
        margin: 0 auto;
    }
    .top_menu_box{
        width: 100%;
        position: absolute;
        top: 0;
        left: 0;
        padding:15px 170px 0 10px;
        >div{
            height: 36px;
            line-height: 36px;
            text-align: center;
            width:120px;
            cursor: pointer;
            background: url('@/assets/screen/noActive.png') no-repeat center center;
            &.float-left{
                margin-left: 20px;
            }&.float-right{
                margin-left: 20px;
            }
            &.active,:hover{
                background: url('@/assets/screen/active.png') no-repeat center center;
            }
        }
    }
}
.screen_content{
    // height: calc(100vh - 100px);
    font-size: 24px;
    justify-content: space-between;
    // display: flex;
    display: inline-block;
    gap:20px;
    padding:0 0px 0 20px;
}
.box_content{
    height: calc(100% - 50px);
    background: rgba(14,59,153,0.2);
    padding:15px;
    position: relative;
    &::after{
        content: '';
        display: block;
        clear: both;
        width:14px;
        height: 14px;
        position: absolute;
        border-left: 1px solid #4BB5FF;
        border-bottom: 1px solid #4BB5FF;
        left: -1px;
        bottom: -1px;
    } 
    &::before{
        content: '';
        display: block;
        clear: both;
        width:14px;
        height: 14px;
        position: absolute;
        border-right: 1px solid #4BB5FF;
        border-bottom: 1px solid #4BB5FF;
        right: -1px;
        bottom: -1px;
    }
}
.font24{
    font-size: 24px;
    color: #fff;
}
.font18{
    font-size: 18px;
}
.font16{
    font-size: 16px;
}
.font14{
    font-size: 14px;
}
.font12{
    font-size: 12px;
}